Structure and catalytic properties of K-doped manganese oxide supported on alumina

被引：45

作者：

Tang, Qinghu ^{[1
,2
]}

Huang, Xiaona ^{[2
]}

Wu, Chengming ^{[2
]}

Zhao, Peizheng ^{[2
]}

Chen, Yuanting ^{[1
]}

Yang, Yanhui ^{[1
]}

机构：

[1] Nanyang Technol Univ, Sch Chem & Biomed Engn, Singapore 637459, Singapore

[2] Henan Normal Univ, Dept Chem, Xinxiang 453007, Peoples R China

来源：

JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL | 2009年 / 306卷 / 1-2期

关键词：

MnO2; Alumina; Potassium; Aromatic alcohol; Molecular oxygen; OCTAHEDRAL MOLECULAR-SIEVES; AEROBIC ALCOHOL OXIDATION; BENZYL ALCOHOL; SELECTIVE OXIDATION; TRANSITION-METAL; SOLID CATALYSTS; AL HYDROTALCITE; MN/C CATALYSTS; WET OXIDATION; OXYGEN;

D O I：

10.1016/j.molcata.2009.02.020

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

In this study, we reported a remarkably improved catalytic activity of Mn/gamma-Al2O3 catalyst promoted with potassium doping in the selective oxidation of benzyl alcohol with molecular oxygen. Characterizations of powder X-ray diffraction (XRD), Raman spectroscopy, X-ray absorption fine structure (XAFS), and hydrogen temperature-programmed reduction (H-2-TPR) revealed that the co-impregnation of potassium to the Mn/gamma-Al2O3 gave rise to the presence of alpha-MnO2 rather than beta-MnO2, resulting in a stable catalyst with enhanced catalytic performance. We also demonstrated this alumina-supported K-Mn mixed oxide catalyst can effectively catalyze aerobic oxidation of various aromatic alcohols. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：48 / 53

页数：6

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